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    <title>Document</title>
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    <div></div>
    <script>
        const spec = { size: '40cm*40cm', color: '黑色'}
        //1.所有属性值获取过来  数组
        // console.log(Object.values(spec));
        //2.转换为字符串 join('/')  把数组根据分隔符转换为字符串
        // console.log(Object.values(spec).join('/'));
        document.querySelector('div').innerHTML = Object.values(spec).join('/')
    </script>
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